When most people hear "insider trading," they think of illegal activity. But the reality is that company insiders, including CEOs, CFOs, board members, and major shareholders, buy and sell their own company's stock regularly. And it is completely legal, as long as they follow the rules.
What Legal Insider Trading Is
Company executives and directors are allowed to trade shares of their own company. The requirement is that they disclose these trades to the SEC within two business days by filing a Form 4.
These filings are public. Anyone can see them. And many investors track them as part of their research process.
How to Read a Form 4
A Form 4 filing includes:
- Who: The name and title of the insider
- What: Whether they bought or sold shares
- How many: The number of shares involved
- At what price: The price per share
- When: The date of the transaction
- Remaining holdings: How many shares they own after the transaction
What Insider Buying Might Tell You
When a company executive buys shares on the open market with their own money, it suggests they believe the stock is undervalued or that the company's future is strong.
This is different from receiving shares as part of their compensation package. Open market purchases are voluntary and use the insider's personal funds. That is a stronger signal.
Multiple insiders buying around the same time is a stronger signal than a single purchase.
What Insider Selling Might Tell You
Insider selling is harder to interpret. Executives sell for many reasons that have nothing to do with their view of the company: diversification, tax obligations, estate planning, buying a house, or simply taking some profit.
A single insider sale is usually not meaningful. But a pattern of heavy selling by multiple insiders, especially at elevated prices, might be worth investigating further.
What It Does Not Tell You
Insider transactions are one data point among many. They do not predict future stock prices. They do not tell you when to buy or sell. And they can be misleading if taken out of context.
Use insider data as context for your research, not as a signal for action.
Where to Find It
All Form 4 filings are available on SEC EDGAR. The Progressive Trailblazer also includes an Insider Trade Tracker that aggregates these filings and presents them alongside company research data.
The Progressive Trailblazer tracks Form 4 insider transactions as part of its company research tools. Educational only. Not financial advice.


